﻿using System;

namespace Program4
{
    class Program
    {
            static void Main(string[] args)
            {
                //可以无限判断

                //性别
                string gender;
                //身高
                int height;
                //体重
                int weight;
                //判断用户的性别
                Console.WriteLine("请输入你的性别（男/女）:");
                gender = Console.ReadLine();

                while (!(gender == "男" || gender == "女"))
                {
                    Console.WriteLine("您输入的性别不合法，请重新输入！");
                    gender = Console.ReadLine();
                }
                //判断用户的身高
                Console.WriteLine("请输入您的身高：");
                while (!(int.TryParse(Console.ReadLine(), out height) && height > 50))
                {
                    Console.WriteLine("您输入的身高不合法，请重新输入！");
                }
                //判断用户的体重
                Console.WriteLine("请输入你的体重：");
                while (!(int.TryParse(Console.ReadLine(), out weight) && weight > 20))
                {
                    Console.WriteLine("您输入的体重不合法，请重新输入！");
                }
            //输出判断健康信息
            //输入判断健康的结果信息
            string message = "";
            //调用方法判定健康状况
            message = DetectWeight(GetStandardWeight(gender, height, weight), weight);
            Console.WriteLine("您的健康状况是：" + message);
        }
            /// <summary>
            /// 计算标准体重
            /// </summary>
            /// <param name="gender">性别</param>
            /// <param name="height">身高</param>
            /// <param name="wweight">体重</param>
            /// <returns></returns>

            public static int GetStandardWeight(string gender, int height, int weight)
            {
            int standardWeigh;
            if(gender=="男")
            {
                standardWeigh = (height - 80) * 7 / 10;
            }
            else
            {
                standardWeigh = (height - 70) * 3 / 5;
            }
                return standardWeigh;
            }
            /// <summary>
            /// 检查健康状态
            /// </summary>
            /// <param name="standardWeight">标准体重</param>
            /// <param name="weight">用户体重</param>
            /// <returns></returns>
            public static string DetectWeight(int standardWeight, int weight)
            {
                string message = "";
                if ((weight - standardWeight) > 0)
                {
                    //体重正常,体重过重，肥胖
                    if (weight < standardWeight * 11 / 10)
                        message = "体重正常";
                    else
                    {
                        if (weight > standardWeight * 11 / 10 && weight < standardWeight * 12 / 10)
                            message = "体重过重";
                        else
                            message = "肥胖";
                    }
                }
                else
                {
                    //体重正常,体重过轻，体重不足
                    if (weight > standardWeight * 9 / 10)
                        message = "体重正常";
                    else
                    {
                        if (weight < standardWeight * 9 / 10 && weight > standardWeight * 8 / 10)
                            message = "体重过轻";
                        else
                            message = "体重不足";
                    }
                }
                return message;
            }
        }

    }
